A leakage protection fixing device and electrical box

Abstract

This utility model discloses a leakage-proof fixing device and electrical box, including a mounting bracket with at least one mounting hole; a quick-connect base made of elastic insulating material, which passes through the mounting hole; and a fastener for fixing electrical equipment. When the fastener is assembled with the quick-connect base, the quick-connect base at least partially expands radially and locks into the mounting hole. This utility model achieves insulation isolation between the electrical equipment and the mounting bracket through elastic insulating material, solving the problem of "indoor inverters becoming electrified due to lack of grounding". The radial expansion locking structure ensures dual reliability of mechanical fixing and electrical insulation, eliminating the need for an additional grounding device, simplifying the structure and reducing costs, while providing both stability and safety.

Description

Technical Field

[0001] This utility model relates to the field of inverter installation structure, and in particular to a leakage protection fixing device and electrical box. Background Technology

[0002] In recent years, with the continuous development of energy storage equipment, users have increasingly higher requirements for energy storage equipment. They not only need high energy density, but also need to be mobile, lightweight, flexible and easy to transport, and have unlimited use (can charge and discharge at the same time), which need to meet the various usage requirements of daily home and outdoor scenarios.

[0003] Mobile outdoor energy storage units require lightweight and flexible movement due to the requirements of their application scenarios. Therefore, they can only use specific inverters, which are expensive and cannot perform charging and discharging simultaneously, thus limiting their application scenarios.

[0004] To address the high cost and inability to charge / discharge requirements of conventional outdoor energy storage inverters, an indoor integrated energy storage inverter was introduced. However, due to the different application requirements of indoor and outdoor energy storage inverters, indoor energy storage inverters often require real-time grounding to achieve equipotentiality, while mobile integrated energy storage units often cannot meet this requirement when used outdoors. This poses a risk of the inverter casing becoming electrified. Since the inverter casing is often fixed to the sheet metal casing of the electrical box with bolts and nuts, this can cause the electrical box casing to become electrified, posing a danger to the user.

[0005] Therefore, how to prevent electrical conduction to the electrical box casing while fixing the inverter and ensuring insulation safety is the current technical problem to be solved. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a leakage-proof fixing device and electrical box, so as to realize the insulation fixing of electrical equipment and sheet metal shell, and solve the problem of the electrical box shell being electrified.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A leakage current protection fixing device, comprising:

[0009] The mounting bracket is provided with at least one mounting hole.

[0010] The fast wire base, made of elastic insulating material, is inserted into the mounting hole;

[0011] Fasteners for securing electrical equipment, wherein when the fasteners are assembled with the quick-release base, the quick-release base at least partially expands radially to engage and secure itself to the mounting hole.

[0012] Furthermore, the fast wire base is provided with a groove slot, which engages with the mounting hole slot.

[0013] Furthermore, the quick-wire base includes an elastic deformation portion, and the quick-wire base is provided with an assembly hole; the elastic deformation portion expands radially when the fastener is assembled into the assembly hole.

[0014] Furthermore, the mounting hole includes a necked section whose diameter gradually decreases towards the bottom of the fastener base.

[0015] Furthermore, the elastic deformation portion is at least two lobe-shaped structures divided around the assembly hole.

[0016] Furthermore, the mounting hole is polygonal, and the groove of the fastener base is adapted to the shape of the mounting hole.

[0017] Furthermore, the fast wire base is specifically made of plastic.

[0018] Furthermore, there are at least four mounting holes, which are distributed around the electrical equipment mounting projection position on the mounting bracket.

[0019] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0020] An electrical box includes an energy storage inverter, a leakage protection device, and a box casing;

[0021] The leakage protection device adopts the leakage protection fixing device described above, and the inverter is fixedly connected to the outer shell of the electrical box through the leakage protection device.

[0022] Furthermore, the inverter is fixedly connected to the mounting bracket of the leakage protection device by fasteners, and the mounting bracket of the leakage protection device is fixedly connected to the outer shell of the electrical box.

[0023] The beneficial effects of this utility model are as follows: This utility model provides a leakage-proof fixing device and electrical box, which achieves insulation isolation between electrical equipment and mounting brackets through elastic insulating material, solving the problem of "indoor inverters becoming electrified due to lack of grounding". The radial expansion clamping structure ensures dual reliability of mechanical fixing and electrical insulation, eliminating the need for additional grounding devices, simplifying the structure and reducing costs, while combining stability and safety. Attached Figure Description

[0024] Figure 1 This is an exploded view of the structure of an anti-leakage fixing device according to an embodiment of the present utility model;

[0025] Figure 2 This is an example installation diagram of an anti-leakage fixing device according to an embodiment of the present utility model;

[0026] Figure 3 This is a side view of the installation of an anti-leakage fixing device according to an embodiment of the present utility model;

[0027] Figure 4 for Figure 3 A detailed structural diagram of Part A;

[0028] Figure 5 This is a first-view structural example of the fast wire base of an anti-leakage fixing device according to an embodiment of the present utility model;

[0029] Figure 6 This is an example cross-sectional view of the fastener base of an anti-leakage fixing device according to an embodiment of the present utility model;

[0030] Figure 7 This is a second-view structural example of the fast wire base of an anti-leakage fixing device according to an embodiment of the present utility model;

[0031] Label Explanation:

[0032] 1. Mounting bracket; 11. Mounting holes;

[0033] 2. Fast wire base; 21. Assembly hole; 22. Neck; 23. Groove slot; 24. Elastic deformation part;

[0034] 3. Fixed bracket;

[0035] 4. Fasteners;

[0036] 5. Electrical equipment. Detailed Implementation

[0037] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0038] Please refer to Figures 1 to 7 A leakage-proof fixing device, comprising:

[0039] Mounting bracket 1, wherein the mounting bracket 1 is provided with at least one mounting hole 11;

[0040] The fast wire base 2 is made of elastic insulating material and is inserted into the mounting hole 11;

[0041] Fastener 4 is used to fix electrical equipment 5. When fastener 4 is assembled with the quick-release base 2, the quick-release base 2 expands radially at least partially and locks into the mounting hole 11.

[0042] As can be seen from the above description, the beneficial effects of this utility model are as follows: This utility model provides a leakage-proof fixing device that uses elastic insulating material to achieve insulation isolation between the electrical equipment 5 and the mounting bracket 1, solving the problem of "the indoor inverter's casing becoming electrified due to lack of grounding." The radial expansion clamping structure ensures dual reliability of mechanical fixing and electrical insulation, eliminating the need for an additional grounding device, simplifying the structure and reducing costs, while also providing stability and safety.

[0043] Furthermore, the fast wire base 2 is provided with a groove slot 23, which engages with the mounting hole 11.

[0044] As described above, the circumferential limiting of the reinforcing wire base 2 and the mounting bracket 1 prevents loosening or rotation, improves structural stability, and ensures insulation performance during long-term use.

[0045] Furthermore, the quick-wire base 2 includes an elastic deformation portion 24, and the quick-wire base 2 is provided with an assembly hole 21; the elastic deformation portion 24 expands radially when the fastener 4 is assembled into the assembly hole 21.

[0046] As described above, when fastener 4 is installed, the elastic deformation part 24 expands radially, forming a "self-tightening" fixation that eliminates the need for tool pre-tightening, simplifying the installation process and improving assembly efficiency. Simultaneously, the pressure generated by the expansion further enhances the insulation performance.

[0047] Furthermore, the mounting hole 21 includes a neck 22 whose diameter gradually decreases towards the bottom of the fastener base 2.

[0048] As described above, the neck 22 guides the insertion direction of the fastener 4, prevents uneven elastic deformation caused by skewing, ensures uniform distribution of expansion force, and improves clamping reliability.

[0049] Furthermore, the elastic deformation portion 24 is at least two petal-shaped structures divided around the assembly hole 21.

[0050] As described above, the petal structure generates multi-directional stress when it expands, which enhances the friction with the mounting hole 11 and improves vibration resistance; at the same time, the gap between the petals provides deformation space and reduces the risk of brittle fracture of the material.

[0051] Furthermore, the mounting hole 11 is polygonal, and the groove slot 23 of the fastener base 2 is adapted to the shape of the mounting hole 11.

[0052] As described above, polygonal structures (such as rectangles) provide stronger circumferential constraints than circular holes, preventing the fast wire base 2 from rotating and ensuring the stability of the insulation path, making them particularly suitable for vibration environments.

[0053] Furthermore, the fast wire base 2 is specifically made of plastic.

[0054] As described above, plastic materials have good insulation, corrosion resistance and processability, are less expensive than metal insulating parts, and are lightweight, meeting the lightweight requirements of outdoor equipment.

[0055] Furthermore, there are at least four mounting holes 11, which are distributed around the mounting projection position of the electrical equipment 5 on the mounting bracket 1.

[0056] As described above, multi-point support ensures uniform stress distribution on the equipment, avoiding loosening caused by stress concentration at a single point; the circumferentially distributed holes provide a symmetrical insulation barrier, improving the overall leakage protection performance.

[0057] An electrical box includes an energy storage inverter, a leakage protection device, and a box casing;

[0058] The leakage protection device adopts the leakage protection fixing device described above, and the inverter is fixedly connected to the outer shell of the electrical box through the leakage protection device.

[0059] As can be seen from the above description, the beneficial effects of this utility model are as follows: The electrical box of this utility model achieves insulation isolation between the electrical equipment 5 and the mounting bracket 1 through elastic insulating material, solving the problem of "the indoor inverter's casing becoming electrified due to lack of grounding." The radial expansion clamping structure ensures dual reliability of mechanical fixing and electrical insulation, eliminating the need for an additional grounding device, simplifying the structure and reducing costs, while also providing stability and safety.

[0060] Furthermore, the inverter is fixedly connected to the mounting bracket 1 of the leakage protection device via fastener 4, and the mounting bracket 1 of the leakage protection device is fixedly connected to the outer casing of the electrical box.

[0061] As described above, the leakage protection device achieves an insulated connection path from "inverter → mounting bracket → electrical box casing", clearly defines the blocking point of the conduction link, and strengthens safety assurance.

[0062] This utility model discloses a leakage-proof fixing device and electrical box, which is suitable for insulation fixing during the installation of electrical equipment, and is especially suitable for insulation safety protection of indoor energy storage inverters applied to outdoor energy storage scenarios.

[0063] Please refer to Figures 1 to 4 Embodiment 1 of this utility model is as follows:

[0064] A leakage current prevention fixing device includes a mounting bracket 1, a quick-release base 2, and a fastener 4;

[0065] The mounting bracket 1 is provided with at least one mounting hole 11;

[0066] In this embodiment, there are at least four mounting holes 11, which are regularly distributed around the mounting projection position of the electrical equipment 5 on the mounting bracket 1.

[0067] Specifically, please refer to Figure 1 and Figure 2 The number of mounting holes 11 is 6, specifically 3 mounting holes 11 are provided on each side of the mounting projection position of the electrical equipment 5. In other equivalent embodiments, the number of mounting holes 11 can be 4, 8 or other numbers, and they can be evenly distributed on both sides, evenly distributed around the four sides, distributed at the four corners or other distribution methods that can effectively provide fixation.

[0068] The fast wire base 2 is made of elastic insulating material and is inserted into the mounting hole 11;

[0069] In this embodiment, the fast wire base 2 is made of plastic. In other equivalent embodiments, the fast wire base 2 can be made of other materials that simultaneously meet the requirements of elasticity and insulation.

[0070] Fastener 4 is used to fix electrical equipment 5. When fastener 4 is assembled with the quick-release base 2, the quick-release base 2 expands radially at least partially and locks into the mounting hole 11.

[0071] In this embodiment, for ease of demonstration and explanation, the electrical equipment 5 is provided with a fixing bracket 3 for installation and fixation, and the fixing bracket 3 is provided with fixing holes. In other equivalent embodiments, the electrical equipment 5 may also be directly provided with fixing holes.

[0072] In this embodiment, fastener 4 is a bolt.

[0073] like Figure 1 , Figure 3 and Figure 4 As shown, the fastener base 2 is aligned with the fixing hole and the mounting hole 11, and is expanded and locked in place by screwing in bolts.

[0074] In this embodiment, self-tapping bolts are used.

[0075] The mounting bracket 1 is formed by bending sheet metal to ensure structural strength.

[0076] Please refer to section 5. Figure 7 Embodiment two of this utility model is as follows:

[0077] A leakage current prevention fixing device, which differs from Embodiment 1 in that this embodiment focuses on describing the structure of the fast wire base 2.

[0078] like Figure 5 and Figure 6As shown, the fast wire base 2 is provided with an assembly hole 21. In this embodiment, the assembly hole 21 is located on the top of the fast wire base 2. The assembly hole 21 includes a necked section 22 whose diameter gradually decreases towards the bottom of the fast wire base 2.

[0079] In this embodiment, the mounting hole 21 is located at the top center of the quick-wire base 2 and extends through the quick-wire base 2. From top to bottom, it has a necked structure after a constant diameter structure at one end.

[0080] The fast wire base 2 is provided with a groove slot 23, which is engaged with the mounting hole 11 through the groove slot 23;

[0081] The fastener base 2 includes an elastic deformation portion 24, which expands radially when the fastener 4 is assembled into the assembly hole 21.

[0082] The mounting hole 11 is polygonal, and the groove 23 of the fastener base 2 is adapted to the shape of the mounting hole 11.

[0083] In this embodiment, the mounting hole 11 adopts a rectangular structure, and the groove 23 of the quick-connect base 2 corresponds to the shape of the mounting hole 11. The rectangular mounting hole 11 and the groove 23 of the quick-connect base 2 are adapted to each other, improving the installation alignment efficiency, enhancing the structural matching degree, and ensuring the stability of fixation and insulation. The rectangular structure of the hole and the groove 23 of the quick-connect base 2 can prevent the quick-connect base 2 from rotating when the bolt is screwed into the assembly hole 21, ensuring the tight fit between the quick-connect base 2 and the mounting hole.

[0084] In other equivalent embodiments, based on the same concept, the mounting hole 11 and the recessed slot 23 can adopt other polygonal structures, such as triangles, hexagons, etc.

[0085] The elastic deformation portion 24 is at least two petal-shaped structures divided around the assembly hole 21.

[0086] like Figure 7 As shown, in this embodiment, the elastic deformation part 24 is divided into four petal-shaped structures based on the rectangular design of the fast wire base 2. In other equivalent embodiments, the fast wire base 2 can be designed as a number of petal-shaped structures according to its shape, material design, or fastening requirements.

[0087] Embodiment 3 of this utility model is as follows:

[0088] An electrical box includes an energy storage inverter, a leakage protection device, and a box casing;

[0089] The leakage protection device adopts a leakage protection fixing device as described in Embodiment 1 or 2 above, and the inverter is fixedly connected to the electrical box shell through the leakage protection device. Specifically, the inverter is fixedly connected to the mounting bracket 1 of the leakage protection device through fastener 4, and the mounting bracket 1 of the leakage protection device is fixedly connected to the electrical box shell.

[0090] In summary, the anti-leakage fixing device and electrical box provided by this utility model have the following beneficial effects:

[0091] (1) Solve the safety hazard of leakage: Utilize the insulation properties of the plastic fast wire base, combined with the groove and elastic deformation glue structure, to achieve a stable connection between the inverter and the sheet metal mounting bracket, while blocking the leakage conduction path, preventing the electrical box casing from becoming live, and ensuring outdoor safety.

[0092] (2) Reduce production costs: Adapt indoor energy storage inverters to outdoor energy storage integrated units to replace high-cost dedicated outdoor inverters, thereby significantly reducing product costs.

[0093] (3) Expanding application scenarios: It supports simultaneous charging and discharging, breaking through the functional limitations of traditional outdoor energy storage devices, meeting the needs of various scenarios in homes and outdoors, and improving the applicability of the product.

[0094] (4) Optimize structural performance: The sheet metal bending mounting bracket takes into account both lightweight and strength, and is suitable for outdoor mobile needs; the combination design of self-tapping screws and quick-release base simplifies the assembly process, enhances structural reliability, and improves product competitiveness.

[0095] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A leakage-proof fixing device, characterized in that, include: The mounting bracket is provided with at least one mounting hole. The fast wire base, made of elastic insulating material, is inserted into the mounting hole; Fasteners for securing electrical equipment, wherein when the fasteners are assembled with the quick-release base, the quick-release base at least partially expands radially to engage and secure itself to the mounting hole.

2. The anti-leakage fixing device according to claim 1, characterized in that, The fast wire base is provided with a groove slot, which engages with the mounting hole.

3. The anti-leakage fixing device according to claim 2, characterized in that, The mounting holes are polygonal, and the groove of the fastener base is adapted to the shape of the mounting holes.

4. The anti-leakage fixing device according to claim 1, characterized in that, The fastener base includes an elastic deformation portion and has an assembly hole; the elastic deformation portion expands radially when the fastener is assembled into the assembly hole.

5. The anti-leakage fixing device according to claim 4, characterized in that, The mounting hole includes a necked section whose diameter gradually decreases towards the bottom of the fastener base.

6. The anti-leakage fixing device according to claim 4, characterized in that, The elastic deformation portion is at least two lobe-shaped structures divided around the assembly hole.

7. The anti-leakage fixing device according to claim 1, characterized in that, The fast wire base is specifically made of plastic.

8. The anti-leakage fixing device according to claim 1, characterized in that, There are at least four mounting holes, which are distributed around the electrical equipment mounting projection position on the mounting bracket.

9. An electrical box, characterized in that, This includes energy storage inverters, leakage protection devices, and the outer casing of the electrical box; The leakage protection device adopts any one of the leakage protection fixing devices described in claims 1-8, and the inverter is fixedly connected to the outer shell of the electrical box through the leakage protection device.

10. An electrical box according to claim 9, characterized in that, The inverter is fixedly connected to the mounting bracket of the leakage protection device by fasteners, and the mounting bracket of the leakage protection device is fixedly connected to the outer shell of the electrical box.

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